Vixen Optics A105M II f/9.5 Achromatic Refractor Telescope - OTA Only

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- Large 105mm multi-coated achromatic objective lens delivers bright views with reduced chromatic aberration
- Long 1,000mm focal length and f/9.5 optics ideal for detailed lunar and planetary observing
- Included flip mirror diagonal allows quick switching between two eyepieces without removing them
- Versatile design includes an XY red dot finder, tube rings, dovetail plate, and carrying handle
Vixen A105 II Achromatic Refracting Telescope
The Vixen A105MII is a versatile 105mm f/9.5 achromatic refractor telescope designed to deliver bright, detailed views of the Moon, planets, and deep-sky objects. Featuring a multi-coated achromatic objective lens, this telescope minimizes chromatic aberration while improving light transmission for sharp, high-contrast images.
With its 1,000mm focal length, the A105MII excels at detailed lunar and planetary observing while offering the flexibility to explore brighter nebulae and star clusters. The included 1.25" flip mirror diagonal makes switching between eyepieces quick and easy, while the rack-and-pinion focuser provides smooth, precise adjustments. Whether you're a beginner or an experienced observer, the A105MII is an excellent choice for visual astronomy!


Optical Advantages of the Vixen A105M II
The Vixen A105M II uses a traditional refractor optical design, featuring an objective lens at the front of the telescope that gathers and focuses light for clear, detailed views. Its straight-through optical path makes locating celestial objects such as the Moon, planets, nebulae, and star clusters simple and intuitive.
Unlike reflector telescopes, the A105M II has no central obstruction in its optical path, minimizing light loss and diffraction for improved image contrast. Internal light baffles also help reduce stray light and unwanted reflections, delivering bright, sharp views with excellent contrast and clarity.


Achromatic Optics
The Vixen A105M II features an achromatic objective lens designed to reduce chromatic aberration (color fringing) for sharper, more detailed views. By combining two lens elements made from different types of glass, the optical system brings red and blue wavelengths closer to a common focus, minimizing unwanted color distortion.
A three-layer anti-reflective multi-coating further reduces reflections and improves light transmission, delivering bright, crisp images with excellent contrast for lunar, planetary, and deep-sky observing.


Switch Magnifications Instantly w/ Included Flip Mirror
The included 1.25" flip mirror features two eyepiece holders, allowing you to attach eyepieces with different focal lengths simultaneously. With a simple flip of the mirror, you can instantly switch between straight-through and right-angle viewing paths, making it easy to change magnifications without swapping eyepieces.
Please note: Eyepieces are not included with this optical tube assembly (OTA) and are shown for demonstration purposes only.


Versatile Accessory Compatibility for Observing and Imaging
The Vixen A105M II features a versatile 60mm accessory connection, allowing you to expand your telescope's capabilities for visual observing, astrophotography, and more. Compatible with a wide range of optional eyepieces, camera adapters, and smartphone accessories, it offers flexibility for exploring the night sky at different magnifications or capturing celestial images.
For solar observing, the optional Vixen Solar Projection Screen Set B allows you to safely view projected images of sunspots and solar eclipses without looking directly at the Sun.
- Optical Design: Achromatic Refractor
- Aperture: 105 mm (4.13")
- Focal Length: 1,000 mm
- Focal Ratio: f/9.5
- Objective Lens: Multi-Coated Achromatic
- Resolving Power: 1.1 Arcseconds
- Limiting Magnitude: 11.9
- Light-Gathering Power: 225x
- Focuser Type: Rack-and-Pinion
- Accessory Threads: M60 (Adapters Required)
- Eyepiece Connection: 1.25" with Included Flip Mirror
- Finderscope: XY Spot Finder (1x)
- Optical Tube Length: 1,010 mm (39.76")
- Optical Tube Diameter: 115 mm (4.53")
- Optical Tube Weight: 3.8 kg (8.38 lbs)
- Weight with Accessories: 4.8 kg (10.58 lbs)
- Mounting Hardware: Tube Rings and WT Dovetail Plate
- Carrying Handle: Metal
- Imaging Compatibility: Prime Focus, Eyepiece Projection, and Afocal Imaging (Additional Adapters Required)
Other Information
- Country of Manufacture: Japan
Vixen A105 II Achromatic Refracting Telescope
The Vixen A105MII is a versatile 105mm f/9.5 achromatic refractor telescope designed to deliver bright, detailed views of the Moon, planets, and deep-sky objects. Featuring a multi-coated achromatic objective lens, this telescope minimizes chromatic aberration while improving light transmission for sharp, high-contrast images.
With its 1,000mm focal length, the A105MII excels at detailed lunar and planetary observing while offering the flexibility to explore brighter nebulae and star clusters. The included 1.25" flip mirror diagonal makes switching between eyepieces quick and easy, while the rack-and-pinion focuser provides smooth, precise adjustments. Whether you're a beginner or an experienced observer, the A105MII is an excellent choice for visual astronomy!


Optical Advantages of the Vixen A105M II
The Vixen A105M II uses a traditional refractor optical design, featuring an objective lens at the front of the telescope that gathers and focuses light for clear, detailed views. Its straight-through optical path makes locating celestial objects such as the Moon, planets, nebulae, and star clusters simple and intuitive.
Unlike reflector telescopes, the A105M II has no central obstruction in its optical path, minimizing light loss and diffraction for improved image contrast. Internal light baffles also help reduce stray light and unwanted reflections, delivering bright, sharp views with excellent contrast and clarity.


Achromatic Optics
The Vixen A105M II features an achromatic objective lens designed to reduce chromatic aberration (color fringing) for sharper, more detailed views. By combining two lens elements made from different types of glass, the optical system brings red and blue wavelengths closer to a common focus, minimizing unwanted color distortion.
A three-layer anti-reflective multi-coating further reduces reflections and improves light transmission, delivering bright, crisp images with excellent contrast for lunar, planetary, and deep-sky observing.


Switch Magnifications Instantly w/ Included Flip Mirror
The included 1.25" flip mirror features two eyepiece holders, allowing you to attach eyepieces with different focal lengths simultaneously. With a simple flip of the mirror, you can instantly switch between straight-through and right-angle viewing paths, making it easy to change magnifications without swapping eyepieces.
Please note: Eyepieces are not included with this optical tube assembly (OTA) and are shown for demonstration purposes only.


Versatile Accessory Compatibility for Observing and Imaging
The Vixen A105M II features a versatile 60mm accessory connection, allowing you to expand your telescope's capabilities for visual observing, astrophotography, and more. Compatible with a wide range of optional eyepieces, camera adapters, and smartphone accessories, it offers flexibility for exploring the night sky at different magnifications or capturing celestial images.
For solar observing, the optional Vixen Solar Projection Screen Set B allows you to safely view projected images of sunspots and solar eclipses without looking directly at the Sun.
- Optical Design: Achromatic Refractor
- Aperture: 105 mm (4.13")
- Focal Length: 1,000 mm
- Focal Ratio: f/9.5
- Objective Lens: Multi-Coated Achromatic
- Resolving Power: 1.1 Arcseconds
- Limiting Magnitude: 11.9
- Light-Gathering Power: 225x
- Focuser Type: Rack-and-Pinion
- Accessory Threads: M60 (Adapters Required)
- Eyepiece Connection: 1.25" with Included Flip Mirror
- Finderscope: XY Spot Finder (1x)
- Optical Tube Length: 1,010 mm (39.76")
- Optical Tube Diameter: 115 mm (4.53")
- Optical Tube Weight: 3.8 kg (8.38 lbs)
- Weight with Accessories: 4.8 kg (10.58 lbs)
- Mounting Hardware: Tube Rings and WT Dovetail Plate
- Carrying Handle: Metal
- Imaging Compatibility: Prime Focus, Eyepiece Projection, and Afocal Imaging (Additional Adapters Required)
| Manufacturer | Vixen Optics |
|---|---|
| Telescope Focal Length | 901 - 1000mm |
- 1x Vixen A105MII 105mm f/9.5 Optical Tube Assembly
- 1x XY Red Dot Finder
- 1x 1.25" Flip Mirror Diagonal
- 1x Telescope Tube Rings
- 1x Vixen WT Dovetail Attachment Plate
- 1x Metal Carrying Handle
- Large 105mm multi-coated achromatic objective lens delivers bright views with reduced chromatic aberration
- Long 1,000mm focal length and f/9.5 optics ideal for detailed lunar and planetary observing
- Included flip mirror diagonal allows quick switching between two eyepieces without removing them
- Versatile design includes an XY red dot finder, tube rings, dovetail plate, and carrying handle
Vixen A105 II Achromatic Refracting Telescope
The Vixen A105MII is a versatile 105mm f/9.5 achromatic refractor telescope designed to deliver bright, detailed views of the Moon, planets, and deep-sky objects. Featuring a multi-coated achromatic objective lens, this telescope minimizes chromatic aberration while improving light transmission for sharp, high-contrast images.
With its 1,000mm focal length, the A105MII excels at detailed lunar and planetary observing while offering the flexibility to explore brighter nebulae and star clusters. The included 1.25" flip mirror diagonal makes switching between eyepieces quick and easy, while the rack-and-pinion focuser provides smooth, precise adjustments. Whether you're a beginner or an experienced observer, the A105MII is an excellent choice for visual astronomy!


Optical Advantages of the Vixen A105M II
The Vixen A105M II uses a traditional refractor optical design, featuring an objective lens at the front of the telescope that gathers and focuses light for clear, detailed views. Its straight-through optical path makes locating celestial objects such as the Moon, planets, nebulae, and star clusters simple and intuitive.
Unlike reflector telescopes, the A105M II has no central obstruction in its optical path, minimizing light loss and diffraction for improved image contrast. Internal light baffles also help reduce stray light and unwanted reflections, delivering bright, sharp views with excellent contrast and clarity.


Achromatic Optics
The Vixen A105M II features an achromatic objective lens designed to reduce chromatic aberration (color fringing) for sharper, more detailed views. By combining two lens elements made from different types of glass, the optical system brings red and blue wavelengths closer to a common focus, minimizing unwanted color distortion.
A three-layer anti-reflective multi-coating further reduces reflections and improves light transmission, delivering bright, crisp images with excellent contrast for lunar, planetary, and deep-sky observing.


Switch Magnifications Instantly w/ Included Flip Mirror
The included 1.25" flip mirror features two eyepiece holders, allowing you to attach eyepieces with different focal lengths simultaneously. With a simple flip of the mirror, you can instantly switch between straight-through and right-angle viewing paths, making it easy to change magnifications without swapping eyepieces.
Please note: Eyepieces are not included with this optical tube assembly (OTA) and are shown for demonstration purposes only.


Versatile Accessory Compatibility for Observing and Imaging
The Vixen A105M II features a versatile 60mm accessory connection, allowing you to expand your telescope's capabilities for visual observing, astrophotography, and more. Compatible with a wide range of optional eyepieces, camera adapters, and smartphone accessories, it offers flexibility for exploring the night sky at different magnifications or capturing celestial images.
For solar observing, the optional Vixen Solar Projection Screen Set B allows you to safely view projected images of sunspots and solar eclipses without looking directly at the Sun.
- Optical Design: Achromatic Refractor
- Aperture: 105 mm (4.13")
- Focal Length: 1,000 mm
- Focal Ratio: f/9.5
- Objective Lens: Multi-Coated Achromatic
- Resolving Power: 1.1 Arcseconds
- Limiting Magnitude: 11.9
- Light-Gathering Power: 225x
- Focuser Type: Rack-and-Pinion
- Accessory Threads: M60 (Adapters Required)
- Eyepiece Connection: 1.25" with Included Flip Mirror
- Finderscope: XY Spot Finder (1x)
- Optical Tube Length: 1,010 mm (39.76")
- Optical Tube Diameter: 115 mm (4.53")
- Optical Tube Weight: 3.8 kg (8.38 lbs)
- Weight with Accessories: 4.8 kg (10.58 lbs)
- Mounting Hardware: Tube Rings and WT Dovetail Plate
- Carrying Handle: Metal
- Imaging Compatibility: Prime Focus, Eyepiece Projection, and Afocal Imaging (Additional Adapters Required)
Other Information
- Country of Manufacture: Japan
| Manufacturer | Vixen Optics |
|---|---|
| Telescope Focal Length | 901 - 1000mm |
- 1x Vixen A105MII 105mm f/9.5 Optical Tube Assembly
- 1x XY Red Dot Finder
- 1x 1.25" Flip Mirror Diagonal
- 1x Telescope Tube Rings
- 1x Vixen WT Dovetail Attachment Plate
- 1x Metal Carrying Handle
